Write Serial parameters during slow logging for OpenLog Artemis (with IMU)

Hi @wqrydqk ,

I see that you have been modifying the boards. I wonder if you have cut through the RX track?

Also, the board is 4-layer and the outer layers are very thin. Please be careful you do not create a short between the outer layers and the inner layers at the cut edge.

I hope this helps,
Paul